Title :
Lateral and longitudinal mode discrimination in index-guided circular ring semiconductor lasers
Author :
Nabiev, R.F. ; Francis, D. ; Chang-Hasnain, C.J.
Author_Institution :
Edward L. Ginzton Lab., Stanford Univ., CA, USA
Abstract :
We present the first analysis of the mode structure and thresholds of index-guided ring lasers, and on longitudinal mode discrimination of X-junction-coupled ring lasers. Submilliampere thresholds can be achieved with single-lateral-mode ring lasers having small refractive index steps. In addition, strong longitudinal mode discrimination can be obtained with ring lasers of different cavity lengths coupled via an X junction.<>
Keywords :
laser modes; laser theory; optical losses; optical waveguide theory; refractive index; ring lasers; semiconductor lasers; X-junction-coupled ring lasers; cavity lengths; index-guided circular ring semiconductor lasers; lateral mode discrimination; longitudinal mode discrimination; mode structure; small refractive index steps; submilliampere thresholds; thresholds; Electromagnetic waveguides; Etching; Laser modes; Masers; Optical coupling; Refractive index; Ring lasers; Semiconductor lasers; Surface emitting lasers; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
